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Shovel Strike plates and strike boxes, assorted types and sizes Utility knife and assorted blades Vacuum cleaner Weiser shim pick Wood chisels, assorted sizes (Fig. 2.39) Wood glue
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Figure 2.37 A boring jig is a tem-
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plate that acts as a guide for drilling precise installation holes and cutouts for locks and door hardware. (Keedex Mfg.)
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Figure 2.38 Hole saws and spade bits are used to install locks on doors. (Skil Corporation)
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Tools of the Trade
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Figure 2.39 Wood chisels of vari-
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ous sizes are needed when installing locks and other hardware on wood doors. (Stanley Works.)
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List 6: Tools for installing alarms and electronic security devices (needed in addition to all of the tools in Lists 1 and 2)
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Electrical tape Fish tape Flexible drill bits and extensions Multimeter Staple guns (or wiring tackers) and staples, assorted sizes for wire and coaxial cable Twist connectors Under-carpet tape Voltage tester Wire stripper Wire cutters
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It isn t necessary to have all of the listed tools to practice the lessons in this book. As you study each chapter, you ll learn which tools you need and which you can do without. With all the tools listed in this chapter, you ll have enough equipment and supplies to start a locksmithing business.
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Types of Locks and Keys
Most people have a general understanding of what a lock is, but that understanding is often limited to the few models they ve owned or seen. Few nonlocksmiths know much about the wide variety of locks that exist throughout the world or how locking technology has changed over the years. That s why many general consumer books and articles about locks (which are almost always written by nonlocksmiths) use definitions of the term lock that are too narrow, broad, or outdated. Although laypersons might not need to be concerned about the misleading definitions, it s important for a locksmith to know what a lock really is and isn t. What Is a Lock Coming up with clear and precise definitions of lock isn t as easy as you might think. To see what I mean, write down your best definitions before reading further. After you read this introduction, look at them again. Stephen Tchudi, a University of Nevada English professor, had a hard time figuring out what a lock is. In his book on locks, he suggested that a stone rolled in front of a cave may have been the first lock, and that rolling the rock away was picking the lock. He also called guard crocodiles in moats living locks, and wrote that drugging them is picking the locks. A lock, after all, is simply a barrier or closure, a way of sealing up an entryway, of keeping what you want in, in, what you want out, out, Tchudi wrote. A stick or doorstop that you wedge under a door is also a lock, though, again, not a reliable or unpickable one. Although it s creative, such a broad all-encompassing definition has no practical value for the locksmith or anyone who works with, uses, or needs to buy a lock. Also, it shows that that person doesn t know what lock picking means because a rock, crocodile, and stick are unpickable as is anything without a keyway.
Copyright 2005 by Bill Phillips. Click here for terms of use.
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Major dictionaries are more precise in their definitions. The Random House Dictionary of the English Language, 2d ed. unabridged, says a lock is A device for securing a door gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts, propelled and withdrawn by a mechanism operated by a key, dial, etc. Webster s Third New International Dictionary, unabridged, says a lock is A fastening (as for a door, box, trunk lid, drawer) in which a bolt is secured by any of various mechanisms and can be released by inserting and turning a key or by operating a special device (as a combination, time lock, automatic release button, magnetic solenoid). Those dictionary definitions are much better than the locks are all things that hold, hide, fasten, or bite kinds of definitions. High-quality dictionaries don t just make up definitions; they try to keep up with standard usage, based on a wide range of sources. As the editors explained in the preface of the Merriam Webster s Collegiate Dictionary, 10th ed.: The everexpanding vocabulary of our language exerts inexorable pressure on the contents of any dictionary. Words and senses are born at a far greater rate than that at which they die out. The locksmithing field progresses faster than the dictionaries update the related terms, which is why dictionary definitions tend to be a bit dated and exclude some current types of locks and locking technology. A more precise definition of lock is given by the International Association of Home Safety and Security Professionals: A device that incorporates a bolt, cam, shackle or switch to secure an object such as a door, drawer or machine to a closed, opened, locked, off, or on position, and that provides a restricted means of releasing the object from that position. One important difference of that from many of the other definitions is the matter of restricted means. If anyone can just turn the doorknob and walk in, there s no restriction. That s why a set of doorknobs isn t a lock but a key-in-knob is. If you tried to make up your own definition of lock, ask yourself three things about it: (1) Does your definition include padlocks (2) Does it include car ignition locks (3) Does it exclude a chair wedged under a doorknob If you can honestly answer Yes to all three, you could be an English professor. Lock Names Most locks have several names, which are usually based on a lock s common uses, appearances, major security features, installation method, internal construction, technology, or manufacturer. Many of the names have overlapping meanings. Some names based on common usage, like trailer lock and bicycle lock, are specific enough to be used by locksmiths as well as laypersons (Figs. 3.1 and 3.2) because there are few significant variations among such locks. That is to say, one trailer lock isn t much different from another trailer lock. Other names based on common usage, however, like house lock and car lock, refer to too many different types of locks. A locksmith would be con-
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